492 



LYC'OPODI ACEiE. 



young sporule, but as there is an indentation in it between the sporulea, 

 probably it is the same as in Isoetes, many of the parent cells are im- 

 bedded in grume, the debris of the original compound cells. 



XII. In the next stage, a transverse section of the walls of cells pre- 

 sent the same transparent appearance, the cells are perhaps large, but 

 preserve the same appearance ? The nuclei of the moveable g°rumous 

 mass vary much, some being very large, others free, smaller and more de- 

 fined, and these appear to be circumferential, the free ones are similar to 

 those contained in the parent cells. The component parts of central 

 moveable mass, now presents the appearance when loose, of irregular 

 plurilocular cells, each cell with grume, or a tendency in this to become 

 nucleary. 



The loose granules mentioned above also, will be found adhering to 

 the circumference of the mass, and are enveloped in amorphous nu- 

 cleary tissue, or in cells like the parietal ones. It is not improbable that 

 they are the outermost of the mass, which is certainly more disposed to 

 assume the appearence of cells containing nuclei, the star appears in the 

 centre when no membrane is discernible, nitric acid shews that each of the 

 divided large cells is in reality an aggregation of cells, each with its own 

 nucleus; component parts are not all on the same plan. Nitric acid only 

 shews the cellular nucleus to have its membrane on the circumference 

 (a, a, in nitric acid.) 



XIII. Adhering to the walls of the cells, and apparently originating 

 from the large cells containing ovine grume, otherwise each cell is filled 

 with grume in which rudiments of other cells are visible, giving the mass 

 where seen in bulk, a blistered appearence. Outer part of capsule cells just 

 defined, inner lining from which large cells and septa originate, of light 

 green colour, but opaque. These two appear almost, if not quite distinct, 

 at least the nucleary grumous rudimentary cellular mass is inseparable ; 

 appearances as if the grumous mass would be devisable into large cells 

 with several nuclei. Nitric acid in many instances causes the separation 

 into distinct angular granules, each with its own nucleus. In the others 

 it only makes the nuclei in the large cells and the outlines of these more 

 clear. 



The parietal cells certainly are not separable, they are less distinct 

 after nitric acid, (b, c, green with whitish molecular.) 



The next stage shews little if any appearances of the parietal cells. 

 The whole mass if such it can be called, consists of roundish cells either 

 distinct or variously aggregated, some of these with the incrusted appear- 

 ance are much larger, among them are well defined small granular nu- 

 cellar bodies. 



The next stage shews the enlargement of the compound cellular 

 bodies, some of which are papilose or incrusted, and the granules of the 

 defined nucleary aspect have now their tegument. 



